Massachusetts Medical Marijuana Initiative eliminates state criminal and civil penalties related to the medical use of marijuana, and patients who meet certain criteria could get marijuana produced and distributed by new state-regulated centers.

In some specific cases, patients would be allowed to grow marijuana for their own use.

Supporters said it gives relief to people with certain medical conditions. Opponents argued it will open the door for more drug abuse, especially by young people.

The use of medical marijuana is currently allowed in 17 states and the District of Columbia.